Oil-gas burner.



W. R/THATCHER.

OIL GAS BURNER.

APPLICATION FILED JAN.19, 1914.

1 1 22,8 1 7, Patented Dec. 29, 1914.

rrrrED STATES PAT N Fm WALTER a. 'rrm'ronna, or osmoosa, Iowa.

OIL-GAS BURNER.

maaeaa Application filed January 19,1914. Seriai No. 813,006.

To all whom it may concern Be it known that I, WALTER R. THATCHER, acitizen of the United-States, residing at Oskaloosa, in the county ofMahaska and State of Iowa, have invented a new and useful Oil-GasBurner, of which the following is a specification. V

The invention relates to improvements "in oil burners.

The object of the present invention is to improve the construction ofoil burners, and

to provide a simple, practical and inexpensive oil burner of strong anddurable construction designed for use in stoves, furnaces and otherheaters, and adapted to enable crude oil, refined oil, or alcohol andthe like to be employed as fuel, and capable of converting the same-intoa gas and of entirely consuming the latter.

A further object of the invention is to provide a stove of thischaracter in which the degree of heat may be readily controlled bv theflow of the fuel-to the burner and in which the fuel will be caused to sread over the burner in a thin sheet, where y the entire fuel deliveredto the burner will be converted into a gas and all danger of cloggingthe burner thereby eliminated.

With these and other objects in view, the invention consists in theconstruction and novelcombination of parts hereinafter fully described,illustrated in the accompanying drawing, and pointed out in the claimshereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention. v

In the drawing: Figure 1 is a central vertical sectional view of an oilgas burner,

constructed in accordance with this invention. Fi 2 is a plan view ofthe upper burner pita. Fig. 3 is a similar view of the lower tray. 7

Like numerals of reference designate corresponding parts in all thefigures of the drawlng.

In the accompanying drawing in which is illustrated the preferredembodiment of the invention, the burner comprises in its construction atop burner plate 1, and a lower tray 2 designed to be constructed ofcast iron or other suitable material-and adjustably mounted on avertical branch or portion 3 of a supply pipe 4, which extends to asuitable source of liquid fuel supply, the flow of the latterto theburner being controlled by a needle valve 5 of the ordinaryconstruction. The fuel suppl pipe preferably consists of an inch pipe,lint the iameter of the pipe and the size and shape of the burner ateand the tray may, of course, be varied to suit the character of thestove, furnace or other heater to which the burner may be applied.

Specification of Letters Patent. I Paiggmtggd Dem- 29 flgfllgt The upperportion of the vertical branch 3 of the supply pipe is provided withexterior screw threads 6,'and the burner plate 1, which is preferably inthe form "of a hori-v zontally disposed disk,is rovided with a centralthreaded opening andis screwed on the upper end of the vertical branch3.The burner plate, which is imperforate from the lower edgeof the burnerplate,

The burner plate has a cm the central opening to an outer andthelotvenQpe of the latter is provided with a recess having an outerdownwardly and outwardTy mclined peripheral wall 12 to enable the burnerplate to constitute a hood and adapted to hold the heat and flame instarting the burner, and caable also of deflecting the air downwardly 1nthe direction of the lower tray 2 in the operation of the burner. Theoil or other liquid fuel is adapted to spread out in a thin sheet overthe upper face of the burner plate as it flows from the supply pipe 3,

and after the burner plate becomes heated such fuel will be immediatelyconverted into gaseous form and burn. The recess 8 is desi ed to retainsuch fuel on'the up er face 0 the burner plate until converted into aioo gas, but if it is desired to increase the heat is disposedhorizontally,is of greater diam-- .eter than the burner plate andconsists of a central hub portion or ring 13, radial arms 14 and anouter rim orannular body portion 15, provided in its upper facewith anannular recess or gutter 16 increasing m depth outwardly and forming anouter upwardly extending wall 17 The annular groove or gutter is locatedbeneath the lowerperipheral edge of the burner plate and it is of.

sufficient width to receive the liquid fuel flowing from the burnerplate. The bot-' tom face of the annular recess or gutter is inclinedand extends downwardly from the inner edge or face'of the rim 15 to thewall 17. 'The recessor gutter .16 is adapted to catch the liquid fuelflowing over the burner plate and it also serves as a startingreceptacle' in which oil may be burned to heat the burner plate instarting the burner. The hub or ring 13 is provided with a threadedopening 18 and screws on the threaded portion .of the vertical branch ofthe supply pipe being spaced from the top burner plate.

he rim 15 of the tray 2 is provided in its lower face with an annulargroove '19 re- I ceiving the upper edge of a cylindrical air shaft 20,constructed of iron or other suitable material and consisting of avertically disposed cylinder having imperforate walls and arranged uponand extending upwardly from the grate 21 of the stove 'or other heaterto which the burner is applied. The

vertical branch of the fuel supply pipe extends upwardly through thegrate, as shown in Fig. 1 'of the drawing, and the openings between thegrate bars are sealed beyond the air shaft by fire clay, asbestos, orother noncombustible material as well as at the other openings in thefire box of the stove or heater, so that the air for supportingcombustion must pass upwardly through the air shaft to the burner. Theair ascending the cylindrical shaft or flue 20 passes through theopenings or spaces between the arms 14 of the lower tray 2, and passesoutwardly over the lower tray through the space be tween the same andthe upper burner plate and is adapted to support combustion when fuel isburned in the oove or gutter in starting the burner and also after thetop burner plate has become heat-ed sufliciently to generate gas fromthe liquid fuel. When the fuel is burned in the groove or gutter tostart the burner, the lower hood portion ofthe burner plate is adaptedto hold the heat and flame so as to cause a rapid heating of the saidlate and a quick starting of the burner. rude oil, refined oil, alcoholor similar liquid fuel may be used in the burner, which is adapted toproduce an intense economical heat. In operating the burner, the fuelmay be controlled so that after the starting of the burner, the burnerplate will convert into a gas the entire amount of fuel fed to it. Ifthe top disk or burner plate does not furnish sufiicient heat, the flowof fuel is increased to cause a portion of the same to be delivered tothe the same manner as the upper plate. By in creasing the number oflower trays, a.

be obtained.

burner of any desired heating capacity may What is claimed is:f 1 f 1.The combination with a grate, of a vertical air shaft seated upon thegrate and having imperforate vertical walls, a tra seated upon the upperedges of the vertlcal walls of the air shaft and provided in its'upperface with a groove or gutter, a supply pipe passing through the 7through and projectgrate and extending "lower tray. where it will beconverted into V a gas and burn, the lower tray operating in mg abovethe tray, the latter being provided at an intermediate point between thesupply pipe and the walls of the air shaft with openings, '-and a topburner, plate mounted upon the upperend-ofthe supply pipe andihaving anopening receiving the.

same, said supply pipe supporting the top burner plate above and outof'contact with the tray and the said burner plate having its peripherylocated in the vertical plane of thegrooveor gutter of the tray.

2. A burner of the class described-including a vertical'supply pipe, atophorizontally disposed burner plate hav ng'a central opening toreceive the supply pipe and provided in its upper face with a recessin-.

creasing in depth outwardly and forming an upwardly projecting marginalwall, said burner plate being also provided in its lower face with arecess having an outer inclined wall extending downwardly and outwardly,the outer edge or face of the burner plate being inclined upwardly andinwardly, and

a lower tray having a groove or gutter 10- cated beneath and spaced fromthe outer edge of the burner receive fuel therefrom.

plate and adapted to I 3. 'A burner of the class described including avertical air shaft open at. the top and bottom and havingimperforate-walls "and designed to be arranged within the firefpot" of astove or heater, a lower horizontal tray havinga recess or gutterin'it's upper face and provided in its lower face'wlth" a groovereceiving the upper edge of the air shaft, a 7

fuel supply tube passing through the air shaft and through the lowertray and extending above the latter, am} a top burner as my own, I havehereto aflixed my signaplate spaced from the lower tray and havture inthe presence of two witnesses. ing an opening receiving the supply pipe,

said burner plate extending outwardly WALTER THATGHER 5 therefrom to apoint above the groove or Witnesses:

gutter of the lower tray. FEY H. ADKISON,

In testimony, that I claim the foregoing MILES WARREN.

